MESON Chess Problem Database

Problem Display
PID: 107694 (b2b4/QPp5/6qr/pkPR4/p5rp/P3n1pK/BN6/1R6 w - - 0 1)

Barth, Michael

Szoghy-80 MT, 1993

b2b4/QPp5/6qr/pkPR4/p5rp/P3n1pK/BN6/1R6

#2

9 + 12

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kc6
      • 2.Qa6#
    • 1...Qc6
      • 2.Sc4#
  • Tries
    • 1.Sd3+?
      • 1...Kc6
        • 2.Se5#
        • 2.Qa6#
        • 2.bxa8Q#
        • 2.bxa8B#
        • 2.b8S#
      • 1...Rb4!
    • 1.Sc4+?
      • 1...Kc6
        • 2.Sxa5#
        • 2.Se5#
        • 2.bxa8Q#
        • 2.bxa8B#
      • 1...Qxb1!
    • 1.Qxa5+?
      • 1...Kc6
        • 2.Qa6#
        • 2.bxa8Q#
        • 2.bxa8B#
      • 1...Kxa5!
    • 1.c6+?
      • 1...Kxc6
        • 2.Qa6#
        • 2.bxa8Q#
        • 2.bxa8B#
        • 2.b8S#
      • 1...Sxd5!
  • Keys
    • 1.bxa8Q!
      • threat
        • 2.Qxa5#
      • 1...Qa6
        • 2.Sc4#
      • 1...Qb6
        • 2.Sc4#
      • 1...Sc4
        • 2.c6#
      • 1...c6
        • 2.Qa6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • K(g);S_FLIGHT::QAR2(H)
    • Q(h);N_GUARD,SBLOCK::R(A)+S(C)
  • Tries
    • Try
      • S(C);CHECK
      • Refutation
        • R(d);P_SPINR(d)
    • Try
      • S(C);CHECK
      • Refutation
        • Q(h);XR(A)
    • Try
      • Q(H);CHECK,XP(f)
      • Refutation
        • K(g);P-FLIGHT,XQ(H)
    • Try
      • P(F);CHECK
      • Refutation
        • S(a);XR(G)
  • Actual
    • P(I);XB(k)
    • Threat
      • QAR1(H),XP(f)
    • Vars
      • Q(h);N_GUARD::R(A)+S(C)
      • S(a);N_GUARD::R(G)+P(F)
      • P(j);S_CUTQ(h)::QAB1(H)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).